Value Collection 451106PR Hex Head Cap Screw 1/2-13 X 12 in

Product Description

The VALUE COLLECTION 451106PR is a 1/2-13 UNC hex head cap screw measuring 12 inches under the head, manufactured from Grade 8 steel with a bright uncoated finish. Grade 8 steel provides high tensile strength, making this fastener appropriate for heavy-duty structural, mechanical, and industrial bolted joints. The partially threaded shank allows for a clamping grip in the unthreaded portion, which is standard practice in bolted assemblies requiring a precise shear zone. This fastener meets ASME B18.2.1 dimensional standards and is installed by millwrights, maintenance mechanics, and industrial technicians across a broad range of equipment and structural applications.

This cap screw is suited for use in industrial machinery, structural steel assemblies, agricultural equipment, and heavy mechanical fabrication where high-strength inch-series fasteners are required. The 1/2-13 UNC thread series is one of the most common coarse-thread sizes in North American trade applications. The 12-inch length under head accommodates thick stack assemblies or applications requiring extended bolt reach. Partial threading leaves a smooth shank section for load transfer without thread engagement at the shear plane.

Key Features

• Grade 8 steel construction for high tensile strength in demanding bolted joints
• Partially threaded shank for controlled clamp load and shear zone isolation
• 1/2-13 UNC thread profile — standard coarse-thread inch series
• 12-inch length under head accommodates thick or multi-layer assemblies
• Bright uncoated finish — no plating to affect thread fit or dimensional tolerance
• Meets ASME B18.2.1 dimensional standard for hex head cap screws

Compatibility

Designed as a standard inch-series hex head cap screw compatible with any 1/2-13 UNC tapped hole or nut requiring a Grade 8 fastener per ASME B18.2.1 specifications.

Installation Notes

Installation is performed by qualified mechanics or millwrights using a 3/4-inch hex wrench or socket. Always confirm mating thread class and nut grade before assembly — Grade 8 cap screws should be paired with appropriately rated nuts and washers. Torque to the value specified in the applicable equipment service documentation or structural design drawings. Inspect threads for damage before installation and replace any fastener with deformed or corroded threads.